AT&T 6300 Service Manual page 89

INSTALLATIONS
Caution: To prevent any damage to the system
circuitry by static electricity, be sure to wear a wrist
static strap or touch the metal chassis of the system
just before you handle any IC chips or system
boards.
To upgrade the Motherboard memory, proceed as follows:
1. Turn the System Module and all external devices OFF.
2. Unplug the ac power cable from the rear panel.
3. Disconnect all cables (Display, Keyboard, Printer, etc.) from
the rear panel of the System Module.
4. Turn the System Module upside down so that the lower
cover is on top.
5.
Loosen the two screws that secure the lower cover (located
on the rear panel).
6. Slide the lower cover forward approximately 0.5 inch and
lift it from the System Module.
3-13